System Diagram

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Door Lock System Diagram (1 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: Door Lock System Diagram (2 Of 3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: Door Lock System Diagram (3 Of 3)

Communication table:

COMMUNICATION REFERENCE

Sender	Receiver	Signal	Line
Main Body ECU	Certification ECU	IG signal ACC signal Power switch signal Driver side door courtesy light switch signal Passenger side door courtesy light switch signal Rear LH side door courtesy light switch signal Rear RH side door courtesy light switch signal Vehicle type handle signal	CAN
Meter ECU	Certification ECU Main Body ECU	Vehicle speed signal	CAN
Front Door ECU LH Front Door ECU RH Rear Door ECU LH Rear Door ECU RH	Certification ECU	Door lock position signal Entry lock switch signal Entry unlock touch sensor signal	CAN
Power Trunk Lid Control ECU	Certification ECU	Luggage compartment door courtesy light switch signal Luggage compartment door opener switch signal	CAN
Steering Lock ECU	Certification ECU	Encryption code signal Encryption code finish signal Encryption calculate fixed number memory requirement signal During entry control signal	LIN
ID Code Box	Certification ECU	Matching request random number signal	LIN
Certification ECU	Main Body ECU	Entry door lock signal Entry door unlock signal	CAN
Certification ECU	Meter ECU	Inside key existence warning signal Low key battery warning signal Shift position warning signal Meter buzzer request signal Door open indicate signal Steering lock warning signal	CAN
Certification ECU	Front Door ECU LH Front Door ECU RH Rear Door ECU LH Rear Door ECU RH	Door lock / unlock standby control signal	CAN
Certification ECU	Front Light ECU	Wireless door lock buzzer sound signal Wireless door lock buzzer volume signal	CAN
Certification ECU	Main Body ECU	Immobiliser ID entry required signal Key code check signal	LIN
Certification ECU	ID Code Box	Replay code signal	LIN